TANAMI counterparts to IceCube high-energy neutrino events

Simple item page
dc.contributor.authorKrauß, Felicia
dc.contributor.authorWang, Bingjie
dc.contributor.authorBaxter, Claire
dc.contributor.authorKadler, Matthias
dc.contributor.authorMannheim, Karl
dc.contributor.authorOjha, Roopesh
dc.contributor.authorGräfe, Christina
dc.contributor.authorMuller, Cornelia
dc.contributor.authorWilms, Joern
dc.contributor.authorCarpenter, Bryce
dc.contributor.authorSchulz, Robert
dc.contributor.authorTANAMI Collaboration
dc.contributor.authorFermi-LAT Collaboration
dc.date.accessioned2020-05-01T13:05:31Z
dc.date.available2020-05-01T13:05:31Z
dc.date.issued2015-02-10
dc.description.abstractSince the discovery of a neutrino flux in excess of the atmospheric background by the IceCube Collaboration, searches for the astrophysical sources have been ongoing. Due to the steeply falling background towards higher energies, the PeV events detected in three years of IceCube data are the most likely ones to be of extraterrestrial origin. Even excluding the PeV events detected so far, the neutrino flux is well above the atmospheric background, so it is likely that a number of sub-PeV events originate from the same astrophysical sources that produce the PeV events. We study the high-energy properties of AGN that are positionally coincident with the neutrino events from three years of IceCube data and show the results for event number 4. IC 4 is a event with a low angular error (7.1°) and a large deposited energy of 165 TeV. We use multiwavelength data, including Fermi/LAT and X-ray data, to construct broadband spectra and present parametrizations of the broadband spectral energy distributions with logarithmic parabolas. Assuming the X-ray to {\gamma}-ray emission in blazars originates in the photoproduction of pions by accelerated protons, their predicted neutrino luminosity can be estimated. The measurements of the diffuse extragalactic background by Fermi/LAT gives us an estimate of the flux contributions from faint unresolved blazars. Their contribution increases the number of expected events by a factor of ∼2. We conclude that the detection of the IceCube neutrinos IC4, IC14, and IC20 can be explained by the integral emission of blazars, even though no individual source yields a sufficient energy output.en_US
dc.description.sponsorshipWe acknowledge support and partial funding by the Deutsche Forschungsgemeinschaft grant WI 1860-10/1 (TANAMI) and GRK 1147, Deutsches Zentrum f¨ur Luft- und Raumfahrt grants 50 OR 1311/50 OR 1103, and the Helmholtz Alliance for Astroparticle Physics (HAP). We thank J.E. Davis and T. Johnson for the development of the slxfig module and the SED scripts that have been used to prepare the figures in this work. This research has made use of a collection of ISIS scripts provided by the Dr. Karl Remeis-Observatory, Bamberg, Germany at http://www.sternwarte.uni-erlangen.de/isis/. The Long Baseline Array and Australia Telescope Compact Array are part of the Australia Telescope National Facility, which is funded by the Commonwealth of Australia for operation as a National Facility managed by CSIRO. The Fermi-LAT Collaboration acknowledges support for LAT development, operation and data analysis from NASA and DOE (United States), CEA/Irfu and IN2P3/CNRS (France), ASI and INFN (Italy), MEXT, KEK, and JAXA (Japan), and the K.A. Wallenberg Foundation, the Swedish Research Council, and the National Space Board (Sweden). Science analysis support in the operations phase from INAF (Italy) and CNES (France) is also gratefully acknowledged.en_US
dc.description.urihttps://arxiv.org/abs/1502.02147en_US
dc.format.extent4 pagesen_US
dc.genreconference paper and proceedings preprintsen_US
dc.identifierdoi:10.13016/m2qxkm-ifwe
dc.identifier.citationFelicia Krauß, Bingjie Wang, Claire Baxter, Matthias Kadler, Karl Mannheim, Roopesh Ojha, Christina Gräfe, Cornelia Müller, Joern Wilms, Bryce Carpenter, Robert Schulz, TANAMI counterparts to IceCube high-energy neutrino events, 2015https://arxiv.org/abs/1502.02147en_US
dc.identifier.urihttp://hdl.handle.net/11603/18393
dc.language.isoen_USen_US
dc.publisherarXiven_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Physics Department Collection
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.titleTANAMI counterparts to IceCube high-energy neutrino eventsen_US
dc.typeTexten_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
1502.02147.pdf
Size:
627.07 KB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.56 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

UMBC Physics Department
UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection